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Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW MKV-A5 Golf/Jettas

VW MKV-A5 Golf/Jettas Discussions area for A5/MkV Jetta/Golf (2005/2006 PD and 2009 CR).

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Old March 15th, 2018, 21:46   #16
Revster
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Changed the DSG oil and filter as well as fuel filter, no change. Not that I was really expecting that to clear up the two issues.

I also checked the wire bundle under the starter. I actually noticed a couple of very small wires had little nicks out of them (but no bare wires).. I put some tape over to then just to see if that made a difference. It did not.

All the grounds look good, so other harnesses seem damaged.

I am still really stuck on the ECU flash being the cause. The car ran great no signs of tranny trouble and a smooth running engine. As soon as the ECU flash is done the Transmission doesn't work and the engine can hardly keep its self running. Two major problems in two different system developed over a period of a week while the car sat still.

KermaTDI did the immo delete. I am thinking about sending the ECU for someone else to look at. Any recommendations?
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Old March 19th, 2018, 13:26   #17
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Have you talked to your tuner about this yet? That would be the first door I'd be knocking on before turning a single wrench.
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Old March 22nd, 2018, 03:08   #18
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Quote:
Originally Posted by crazyrunner33 View Post
Have you talked to your tuner about this yet? That would be the first door I'd be knocking on before turning a single wrench.
I've talked to them a few times they don't think it is anything they did.
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Old March 23rd, 2018, 11:05   #19
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It's probably not the tuner's fault on this one, or if it is, they added to existing problems. How did you determine that the immobilizer was the issue? Why did the car sit for 6 months?

If the two issues with the transmission and the number 3 injector are related, then it's more than likely some sort of wiring issue rather than an ECU issue. Either way, it's easier to first focus on this injector issue. The confuser isn't happy with what it's seeing from #3, so check that the injector harness has a good connection, along with the connector going to number 3. Also check the continuity from the #3 injector and connector. Along with the continuity in the injector harness for the #3. If the continuity is looking good, swap the injector with another one and see if the problem moves or not. Afterwards, consider a compression test and check your timing.

Diagnose the issue before throwing parts at it.
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Old March 26th, 2018, 08:46   #20
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Quote:
Originally Posted by crazyrunner33 View Post
It's probably not the tuner's fault on this one, or if it is, they added to existing problems. How did you determine that the immobilizer was the issue? Why did the car sit for 6 months?

If the two issues with the transmission and the number 3 injector are related, then it's more than likely some sort of wiring issue rather than an ECU issue. Either way, it's easier to first focus on this injector issue. The confuser isn't happy with what it's seeing from #3, so check that the injector harness has a good connection, along with the connector going to number 3. Also check the continuity from the #3 injector and connector. Along with the continuity in the injector harness for the #3. If the continuity is looking good, swap the injector with another one and see if the problem moves or not. Afterwards, consider a compression test and check your timing.

Diagnose the issue before throwing parts at it.
Thanks for the input!

I am definitely not going to just start throwing parts at it. I did the tranny oil and fuel filter cause it needed done anyways, but that is all I am doing without knowing what it wrong.

I determined the immobilizer was the issue by what it was doing was exactly as described on this site as well as the tuners site and youtube videos of same problem. It was an intermittent problem the car would start then immediately turn off and the immo light would flash. or it would start and run beautiful. There was never any in between, zero hint of a misfire and zero tranny issues. ***the immo delete worked the car starts and runs every time now. **** so that issue was solved.

The car sat because my mother-in-law passed away, it was her vehicle.

I have gone as far as I can. I have checked all the connections I can see. I have 3 motorcycle projects I am starting today so I am going to take it to the local VW guru today and leave it with him.
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Old March 27th, 2018, 15:40   #21
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UPDATE:

Been back and forth with the VW tech he has gone over every inch of that electrical system and tested all of the injectors. He even went as far as to swap in a new harness. No change. He has reached a dead end and says there is no reason the car should be running this way other than a problem with the ECM. He believes the flash is causing the issue.

I contacted the tuner and advised of him of the findings and he requested I send the ECM back to him. So I just need to get the car back and then I will pull the ECM for the 3rd time and send it back.

I will advise of the results for anyone else that runs into this issue.
Thanks to all of you that offered advice on this.

On a side note the motorcycle projects are going great. Helped my daughter strip her dirtbike down to the frame for a complete rebuild and some powder coating.
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Old April 17th, 2018, 16:37   #22
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Another update:

ECU back from KermTDI no change. Engine doesn't run properly and transmission does not shift. It is exactly the same as it was the first time I got it back from them. The tuner told me he wrote it from a known good ECU.

So I have not exhausted all of the suggestions on here.

At this point I am thinking I need either a new ECU or to send mine to someone that can test/repair this one.

Anyone have suggestions on that? Anyone have a ECU for sale from a 2006 Jetta?
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Old April 25th, 2018, 08:02   #23
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A couple guys PM'D me some advise to get my hands on a gauge and ECM from and junked car and I was able to do just that. It was shipped today, I have an ECM, gauge cluster and a key fob on the way.

Now... my question is, can the key be taken apart? I will have the matching key for the immo but the teeth likely wont match my ignition.
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Old April 25th, 2018, 08:12   #24
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Disregard I found a great video on youtube. But rather than take the RFID chip out I will just move over the key unless there is another reason that won't work???

https://www.youtube.com/watch?v=fLTWwHaJZYc
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Old May 2nd, 2018, 10:37   #25
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FIXED!! Swapped in an ECM, gauge cluster and key fob from a wrecked Jetta and it is running and shifting as it should. It was 100% the ECM, either it went bad or the flash made it that way.

The only system that is not working now is the stereo. It displays CODE 1000 so I am guessing it needs to be pared with the ECM? I will have to research that.
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Old May 2nd, 2018, 11:02   #26
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Quote:
Originally Posted by Revster View Post
FIXED!! Swapped in an ECM, gauge cluster and key fob from a wrecked Jetta and it is running and shifting as it should. It was 100% the ECM, either it went bad or the flash made it that way.
The only system that is not working now is the stereo. It displays CODE 1000 so I am guessing it needs to be pared with the ECM? I will have to research that.
Found my code in the manual all systems are operational! Its nice to get a couple wins after so many losses.

Thanks for the help everyone that gave advice!
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